How to get sorted array with file paths android?

Question

I would like to get array with sorted filePaths. I have managed to get sorted array with filenames like this:

fileList.addAll(Arrays.asList(curFolder.list()));
Collections.sort(fileList);

and I know about such way of getting file paths:

folder.listFiles()

I also know that I can sort all file paths by name or date but I didn't manage to do it. In the end I will add this paths to my recyclerView adapter:

FileManagerAdapter fileManagerAdapter = new FileManagerAdapter(this, (ArrayList<String>) fileList, curFolder.listFiles());

maybe I have to get file path at adapter or what? I hope you will help me :)

And Whats your question here ? Which part is problematic ? Sorting or Adapter ? — ADM, Apr 22 '19 at 08:23
@ADM, my problem is that I can't sort File[] by names like my filelist array. — Andrew, Apr 22 '19 at 08:25
https://stackoverflow.com/questions/18895915/how-to-sort-an-array-of-objects-in-java — ADM, Apr 22 '19 at 08:27
@ADM, can you explain this question please, because I can't still understand how to solve my problem? — Andrew, Apr 22 '19 at 08:43

score 0 · Accepted Answer · answered Apr 22 '19 at 11:04

I have solved my problem:

File[] files = curFolder.listFiles();

Arrays.sort(files, (f1, f2) -> {
if (f1.isDirectory() && !f2.isDirectory()) {
return -1;
} else if (!f1.isDirectory() && f2.isDirectory()) {
return 1;
} else {
return f1.compareTo(f2);
}
});

and as a result:

[/storage/emulated/0/Alarms, /storage/emulated/0/Android, /storage/emulated/0/DCIM, /storage/emulated/0/Download, /storage/emulated/0/Jobnetzwerk, /storage/emulated/0/Movies, /storage/emulated/0/Music, /storage/emulated/0/Notifications, /storage/emulated/0/Pictures, /storage/emulated/0/Podcasts, /storage/emulated/0/Ringtones]

How to get sorted array with file paths android?

1 Answers1